1. 20/16= 5/4 is it proportional
2. 24/28= 8/7 is it proportional
3. 51.2/50.4= 6.4/8.4 is it proportional

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?

Place the following steps in order to complete the square and solve the quadratic equation,

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)